Portable riveting, &amp;c., apparatus.



-- P. J. CHARLES.

`PURTABLE HIVETING, &c., APPARATUS.

. (Applicatio'n led Apr. 18, 1901.)

(No Model.) 'A sheets-sheet i u t. S' ib Il III l Il THE NDRRIS PErEns co.. PHOTULTHO.. WASNINGTGN. D. c.

No. 700,48I. y Patented May 20, |902.

P. J. CHARLES. PORTABLE BIVETING, 81.0., APPARATUS.

(Application med Apr. 1s, 1901.)

(No Model.) 3 Sheets-Sheet 2.

WESEEE No. 700,48l. Patented May 20, |902..

P. J. CHARLES.

PUBTABLE RIVETING, &c., APPARATUS. (Application mea Apr. 1a, 1901.) `(N0 Model.) i 3 Sheets-Shes# 3.

TH': nomas Pzrznsvco.. Punto-undo.. wn'nmmor4. u. u

. UNITED STATESv PATRICK .I AMEsorIARLEs, lon BELFAST, IRELAND.

PORTABLE R|v|-:T|NG, abo., APPARATUS.

SPECIFICATION forming para of Letters Patent No. 700,481,dated71vray 20, 1902. 'I

y Application filed April 18, 1901I 'v Serial No. @6,567. (No model.) l

To @ZZ 107mm/ it may concern.: e.

Be it known that AI, f PATRICK JAMES` CHARLES, electrical engineer, a subject of the. King of Great Britain, residing at the city off Belfast, Ireland, have invented certain new` and useful Improvementsin Portable Rivet` ing, &c., Apparatus, (for which application n has been made in England under-No. 17,073,

dated September 25, 1900,) fofI which the following is a specification. r y

This invention has nfor its `object an improved portable apparatus in which'theopriveting; or calking are'performed"mechanically, also a holding-up device for usein conjunction. therewith in riveting and like operationsf In the accompanying drawings,"Figure y1 is a sectional elevat-ion of therive'ting-maerations ot' hammering, punching,

chine; Fig. 2, a sectional view of the cam deviceandits appurtenances, taken at right angles toFig. l; Fig-3, a sectional elevation of the holdingupdevice.V Fig. 4 is a side elevation of the riveterl and the motor connected together by a nn'iversally-jointed` telescopin g shaft and suspendedf rom an overl head wire. Fig. 5 is a view, on a'larger scale,

of the valve of one of the air-chambers. Fig. 6 illustrates amoditied form of the holdingup device. Fig. 7 is a'sectional view, on an enlarged scale, of theair-'chamber valve.

As applied to riveting operations, l employ two apparatus-namely,a riveting apparatus,A g Figs. l and 2, and a holding-up.device, Fig.,

3. ln the riveting apparatus lI employ a reciprocating hammer-shaft a, actuated .by an.

electromotor or other source of power, and holding-on electro or othery magnets h for attaching tho machine to anyv steel yor iron structure, such as o. llf"electromagnets be the magnets employeda rheostat'is by preference provided to regulate. the strength of adhesion to suitthe variouswork being done.

` The reciprocating hammer-shaft a, which is provided at one end with a hammer-head, is operated by meansof a rotary shaft ,driven, preferably, direct from an electromotor (preferably by a Iiexible shaftor arigid one might be used) or other source` of power, and on this rotary shaft CZ are cams e, which strike against rollers or studs f on the reciprocating shaft a, which cause the latter to reciprocate longitudinally at each rotation of the rotary posed between the end of theshaftfa"anda piston 71 in an air-cylinderql.. *This piston h onf'its seat, so thatanaircl'lshion` isyfornied but when the piston hfreboundsitdraws sufficient air throughthe valve tocompen at lfor any`v leakage that 4has ltakenfplacegf spring lc maybe ,inserted in theair-chamber ton. In'one form-of my apparatus the ham` erable` part of its length .by-a casing-or outer fixed on each sideso as to strike againstthe rollers f or studs on the hammer-shaft a,

visionfis niadeforv placing the hammer-shaft the machine is constructed. For thispurpose lthe outside of theouter tubular shaft l'near Vone end is Amade sphe'ricalexternally at n, and this is mounted ina concave 'spherical bearing or socket o, fixed in the yoke or plate 19, that connects the electromagneticpole-pieces Q, the ham mer-,bar a working,ot` course, in this outer tubular shaft Z. scribed constitutes a ball-andsocket joint, allowing the'hammer-shaft a beinginclined inany direction within the `.range for which the machine is constructed. Its isiyobvious,

ball-and-socket joint,` as aftrunniovn or other suitable arrangement for placingthe hammerhead at any required'inclinationfor'fd'eliver- Auxiliary springs could be provided on the striking-surface of the cams, so arranged as to absorb to a great extent the shocks occarif desired, to insure the! reboundof the pis-A which rollers'orstuds also project through. e ,e p 4 the slots min theonter tubular shaft l. Pro#v v,

a at any inclination within; the ran ge for which 1 The construction de.

however, that Idonot confine' myselfto a' shaft d. At the'opposite end ofthe shaft to f that ofthe hammer-'head is a spring g, interispractically air-,tight andfeushions thehlow .of the cam or cams e onitlieV spring hammerg. y'shaft o. -Any leakage of air from; thefaircylinder vl is compensated for by providingar val-vej,whichopen'sinwardonly; Thus when` j Y. the. cam or cams@ force the shaft r@against its spring' g the airis lcompressedin'theairg` chamber t', andthisvalvej is tightly closed:`

mer-bar is inclosed andy guided for a consid- .l

tubular shaftl.;` A crosss`lot m isjprovidedjy: l i in this outer tubular shaft Zand also through.' the'rec'ipr'ocating hammer-shatter. Through v these slots m m therotary shaft d, on which'l v are fixed the camse, passes, the'cams being IDG ing the blows can be used in place thereof.

sioned by the striking of the cams against the studs or rollers.

The holding-np device for riveting operations is attached lo the iron or steel structure by an electro or other magnet 1*, the same as lhe riveting device. It comprises a bolster orholding-up heads, which ism ou nted, preferably, in a socket or cylinder, also secured to the yoke or plate u, that connects the magnetic pole-pieces. The bolster or holding-up head s has a spring fu, which causes the bolster to instantly spring back after the blow has been delivered, and it has also a spring or air-cushion directly behind it, which absorbs to some extent the blows delivered by the ham mer-shaft (t on the other side of the plate c being riveted. This air-cylinder 'zu has a valve similar to that described in connection with the riveting apparatus.

In action the cams c on the rotary shaft of the riveting apparatus strike against therollers or studs fon the hammer-shaft a, sliding the latter longitudinally and compressing the spring g. Immediately the cams have passed the rollersfthe ham mer-bar a iiies back by the action of spring g and delivers the blow, and the continuous revolution of the cams @thus sets up a rapid reciprocation of the hammerhead, which gives the rapid hammering or riveting strokes against the rivet. The inclination of the hammer shaft ct can be changed at pleasure While the machine is in operation.

If desired, the air-cushion 7o could be dispensed with and an iron-clad magnet employed in place of the electromagnets. This class of magnet has a very powerful grip, which will cause it when the blow has been struck to rebound into position and immediately reattach itself.

If desired, the head or holsters of the holding-up device can be dispensed with and tools of any suitable shape or configuration applied to the work to suit confined or restricted spaces.

The invention as applied to hammering, punching, and calking will be obvious without further description.

Fig. 6 shows the hammer-bar of the holdingup device extended in length, so that it can be laid hold of by the operator and used as a device for driving home the rivet preparatory to the magnetism being applied.

In thus describing the invention I wish it to be understood in conclusion that I do not confine myself to the exact details set forth, as these can be altered to some extent without departing from the nature of the invention. Thus, for example, a device such as shown in Fi". 4 may be employed for suspending the apparatus and preventing it from falling off should the magnets release their hold. The riveting apparatus S and the motor 7 are suspended by small pulleys 2 from an overhead wire 3. This wire might, however, be replaced by another suitable supporting device. The riveter Sis shown to be connected by wires 4 to a rheostat 5 for regnlating the current and the electromagnets, and a telescoping universally-jointed shaft 6 is shown connecting the motor to the riveter. The wire ,with the pulleys 2 running thereon, allows considerable play to the apparatus, so that it can be shifted from hole to hole along the plates.

I claim as my inventionl. In a portable riveting, punching and like apparatus, the combination of a cylinder, a shaft having a hammer-head at its end adapted to be guided in the axis of said cylinder, a piston ai r-tightly packed in said cylinder, a

Ycompression-spring between said shaft and said piston, means for forcing back said shaft intermittentlyagainstthe action of said spring and piston, and means for holding said apparatus upon the work-piece, substantially as set forth.

2. In a portable riveting, punching and like apparatus, the combination of a supportframe, means for holding said frame upon the work-piece, a shaft having a hammer-head at its end slidably mounted in said frame, means for imparting a backward movement to said shaft, a cylinder at rear of said shaft, a piston litting in said cylinder, a compression-spring between said piston and said shaft, an inwardly-opening valve upon said cylinder and a spring in said cylinder at rear of said piston, whereby the piston is caused to rebound after compression, so that air is permitted to enter the cylinder through the valve to replace any that may have escaped during compression.

3. In a portable riveting, punching and like apparatus the combination of a supportframe, means for holding said frame upon the work-piece, a guide mounted in said supportframe, a shaft having a hammer-head at its end mounted in said guide, a compressionspring at the rear of said shaft, a piston at the rear of said spring, an air-compression cylinder in which said piston fits, an inwardlyopening valve on said cylinder, and means for intermittently forcing back said shaft against the pressure of the spring and the compressed air.

4. In a portable riveting apparatus comprising a riveter and a holding-up device adapted to be separately held upon the workpiece by non-mechanical means, the combination of a shaft having-a hammer-head at its end, an air-compression cylinder, a piston in said cylinder in connection with said shaft, means for intermittently forcing back said shaft against the action of said piston, means for forcing forward said shaft after each backward movement, a bolster in said holding-up device, means for pressing forward said b'olster, and an air-cushion behind said bolster whereby it is forced toward the work-piece to support the rivet.

5. In the holding-up device of a riveting apparatus, the combination of a supportframe, means for holding said frame upon the IOS IIO

work-piece, a cylinder in said frame, a bolfl ster adapted to fit inrsaid cylinder and directly connected with a holding-up head, aA

spring adapted to force said bolster out of said cylinder, and an inwardly-opening,valveon said cylinder .whereby air may enter to re-r place any air which mayvhave escaped when the bolster was forced backward. Y

6. In' a portable riveting, punching and like apparatus,.the combination of a supportframe p, a cylindrical guide-sleeve Z mounted in said support-frame, a shaft having a ha1n' mer-head at its end` adapted to slide in said guide-sleeve, a spring g at rear of said shaft, a. piston h at rear of said spring, a cylinder in which said piston Vfits, an inlet-valvej, and means for intermittently pressingbalck said shaft against the action of said lspring and piston. n

7. In a portable riveting, punching and like apparatus, the combination of a support.- framep,V a cylindrical guide-sleevel mounted in said support-frame, a'shaft having a ham mer-head at its end adapted to slide in said gudesleeve,'means forjm parting a backward movement to said shaft, a spring g at rear of said shaft, a piston 'L at rear of said spring,-

a cylinder in which said piston ts,'an inlet- A.valve on said cylinder, and `a spring in said*v Acylinder at rear of saidpistoni h. whereby the, 3o" vpiston is caused to rebound aftera'jcompresksion so that air. may lie-caused to enteriby the .valve to -replace 'any air that'may have es` caped during compressionl v sin a holding-up device'fQra-riveningap '35` I paratus the combinationof a support-.frame u, a cylinder -w mounted-in said'support-A frame, a bolster tting in said 'icylinde'rg'a vholding-.up head 's attached' tossaidbollster, an inwardly-openingvalvej on saidcylin'deLand 4o a spring, adapted toforce `said bolsterotr Wardly from said cylinder,`wh`ereby the 'boil ster always rebounds kin the' cylinder after compression and causes air! to enter 'through f the valve j to replace any. air that may have .45 f

escaped during compression.

In Vwitness whereof..Iphave'hereunto signed e my name, this 12th day ofvMarch, 190471, in the presence of twosubscribingwitnesses. PATRICK JAMES CHARLES;

XVitnesses:

' GLC. DYMQND,Y

GHAs. E. STEVENS.. 

